From: Joerg Roedel <joro@8bytes.org>
To: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Cc: "virtio-dev@lists.oasis-open.org"
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Subject: Re: [PATCH v6 0/7] Add virtio-iommu driver
Date: Fri, 11 Jan 2019 13:28:46 +0100 [thread overview]
Message-ID: <20190111122846.GE5825@8bytes.org> (raw)
In-Reply-To: <9110873f-d344-b6b9-c722-9accfc329db2@arm.com>
Hi Jean-Philippe,
On Thu, Dec 13, 2018 at 12:50:29PM +0000, Jean-Philippe Brucker wrote:
> We already do deferred flush: UNMAP requests are added to the queue by
> iommu_unmap(), and then flushed out by iotlb_sync(). So we switch to the
> host only on iotlb_sync(), or when the request queue is full.
So the mappings can stay in place until iotlb_sync() returns? What
happens when the guest sends a map-request for a region it sent and
unmap request before, but did not call iotlb_sync inbetween?
Regards,
Joerg
next prev parent reply other threads:[~2019-01-11 12:28 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-11 18:20 [PATCH v6 0/7] Add virtio-iommu driver Jean-Philippe Brucker
2018-12-11 18:20 ` [PATCH v6 1/7] dt-bindings: virtio-mmio: Add IOMMU description Jean-Philippe Brucker
2018-12-11 18:20 ` [PATCH v6 2/7] dt-bindings: virtio: Add virtio-pci-iommu node Jean-Philippe Brucker
2018-12-11 18:21 ` [PATCH v6 3/7] of: Allow the iommu-map property to omit untranslated devices Jean-Philippe Brucker
2018-12-11 18:21 ` [PATCH v6 4/7] PCI: OF: Initialize dev->fwnode appropriately Jean-Philippe Brucker
2018-12-11 18:21 ` [PATCH v6 5/7] iommu: Add virtio-iommu driver Jean-Philippe Brucker
2018-12-11 18:21 ` [PATCH v6 6/7] iommu/virtio: Add probe request Jean-Philippe Brucker
2018-12-11 18:21 ` [PATCH v6 7/7] iommu/virtio: Add event queue Jean-Philippe Brucker
[not found] ` <20181211182104.18241-1-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-12-11 18:31 ` [PATCH v6 0/7] Add virtio-iommu driver Christoph Hellwig
2018-12-11 19:07 ` Jean-Philippe Brucker
2018-12-12 0:39 ` Michael S. Tsirkin
2018-12-12 10:35 ` Joerg Roedel
2018-12-12 14:35 ` Michael S. Tsirkin
2018-12-13 12:50 ` Jean-Philippe Brucker
2018-12-13 14:17 ` Christoph Hellwig
2018-12-19 23:09 ` Michael S. Tsirkin
2018-12-20 17:59 ` Jean-Philippe Brucker
2018-12-20 18:17 ` Michael S. Tsirkin
2019-01-11 12:28 ` Joerg Roedel [this message]
2019-01-11 13:00 ` Jean-Philippe Brucker
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